Yeah, I've looked at Corbin, and I may still go that route. I'm doing this on the cheap as much as I can, so I'll likely either see if my ass gets used to the solo seat or try my hand at reupholstering. The other thought was to call Corbin and see if they want to run a model off my bike- they sometimes borrow bikes for a few weeks to take a pattern off it, and then you get the first seat. The 500 isn't made anymore, though, so I rather doubt they'll go for it...